GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2002 🢒 Regal 🢒 Transmission/Transaxle 🢒 Automatic Transaxle - 4T65-E 🢒 Accumulator and 2-1 Manual Servo Replacement

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the filter. Refer to Automatic Transmission Fluid Filter and Seal Replacement .

    3. Object Number: 164809 Size: SH
  3. Remove the accumulator bolts (131).
  4. Remove the manual 2-1 band servo cover bolts (103).

    5. Object Number: 97365 Size: SH
  5. Remove the accumulator assembly.

    6. Object Number: 164811 Size: SH
  6. Remove the manual 2-1 band servo (106-116).
  7. To disassemble, inspect and service the accumulator and 2-1 manual servo. Refer to 2-1 Manual Band Servo Disassemble in Transmission/Transaxle - 4T65-E Unit Repair.

Installation Procedure
  1. If disassembled, assemble the 2-1 band servo. Refer to 2-1 Manual Band Servo Assemble in Transmission/Transaxle - 4T65-E Unit Repair.

    2. Object Number: 164811 Size: SH
  2. Install the manual 2-1 band servo (106-116).
  3. Install the manual 2-1 band servo cover (104).

    4. Object Number: 97365 Size: SH
  4. Install the accumulator assembly.

    5. Object Number: 164809 Size: SH

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Install the manual 2-1 band servo cover bolts (103).

    6. Tighten
    Tighten the bolts (103) to 24 N·m (17 lb ft).

  6. Install the accumulator bolts (131).

    7. Tighten
    Tighten the bolts (131) to 11 N·m (97 lb in).

  7. If removed, install the new filter seal.
  8. Install the filter. Refer to Automatic Transmission Fluid Filter and Seal Replacement .
  9. Lower the vehicle.
  10. Check and fill the transaxle.

    11. Important: It is recommended that transmission adaptive pressure (TAP) information be reset.

    Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, The ECM, PCM or TCM will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned.

  11. Reset the TAP values. Refer to Adapt Function .